690 lines
18 KiB
C++
690 lines
18 KiB
C++
/*************************************************************************/
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/* camera.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "camera.h"
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#include "camera_matrix.h"
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#include "scene/resources/material.h"
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#include "scene/resources/surface_tool.h"
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void Camera::_update_audio_listener_state() {
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}
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void Camera::_request_camera_update() {
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_update_camera();
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}
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void Camera::_update_camera_mode() {
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force_change=true;
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switch(mode) {
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case PROJECTION_PERSPECTIVE: {
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set_perspective(fov,near,far);
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} break;
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case PROJECTION_ORTHOGONAL: {
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set_orthogonal(size,near,far);
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} break;
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}
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}
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bool Camera::_set(const StringName& p_name, const Variant& p_value) {
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bool changed_all=false;
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if (p_name=="projection") {
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int proj = p_value;
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if (proj==PROJECTION_PERSPECTIVE)
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mode=PROJECTION_PERSPECTIVE;
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if (proj==PROJECTION_ORTHOGONAL)
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mode=PROJECTION_ORTHOGONAL;
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changed_all=true;
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} else if (p_name=="fov" || p_name=="fovy" || p_name=="fovx")
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fov=p_value;
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else if (p_name=="size" || p_name=="sizex" || p_name=="sizey")
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size=p_value;
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else if (p_name=="near")
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near=p_value;
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else if (p_name=="far")
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far=p_value;
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else if (p_name=="keep_aspect")
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set_keep_aspect_mode(KeepAspect(int(p_value)));
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else if (p_name=="vaspect")
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set_keep_aspect_mode(p_value?KEEP_WIDTH:KEEP_HEIGHT);
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else if (p_name=="h_offset")
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h_offset=p_value;
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else if (p_name=="v_offset")
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v_offset=p_value;
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else if (p_name=="current") {
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if (p_value.operator bool()) {
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make_current();
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} else {
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clear_current();
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}
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} else if (p_name=="cull_mask") {
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set_cull_mask(p_value);
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} else if (p_name=="environment") {
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set_environment(p_value);
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} else
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return false;
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_update_camera_mode();
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if (changed_all)
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_change_notify();
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return true;
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}
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bool Camera::_get(const StringName& p_name,Variant &r_ret) const {
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if (p_name=="projection") {
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r_ret= mode;
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} else if (p_name=="fov" || p_name=="fovy" || p_name=="fovx")
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r_ret= fov;
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else if (p_name=="size" || p_name=="sizex" || p_name=="sizey")
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r_ret= size;
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else if (p_name=="near")
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r_ret= near;
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else if (p_name=="far")
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r_ret= far;
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else if (p_name=="keep_aspect")
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r_ret= int(keep_aspect);
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else if (p_name=="current") {
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if (is_inside_tree() && get_tree()->is_node_being_edited(this)) {
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r_ret=current;
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} else {
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r_ret=is_current();
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}
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} else if (p_name=="cull_mask") {
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r_ret=get_cull_mask();
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} else if (p_name=="h_offset") {
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r_ret=get_h_offset();
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} else if (p_name=="v_offset") {
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r_ret=get_v_offset();
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} else if (p_name=="environment") {
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r_ret=get_environment();
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} else
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return false;
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return true;
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}
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void Camera::_get_property_list( List<PropertyInfo> *p_list) const {
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p_list->push_back( PropertyInfo( Variant::INT, "projection", PROPERTY_HINT_ENUM, "Perspective,Orthogonal") );
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switch(mode) {
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case PROJECTION_PERSPECTIVE: {
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p_list->push_back( PropertyInfo( Variant::REAL, "fov" , PROPERTY_HINT_RANGE, "1,179,0.1",PROPERTY_USAGE_NOEDITOR) );
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if (keep_aspect==KEEP_WIDTH)
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p_list->push_back( PropertyInfo( Variant::REAL, "fovx" , PROPERTY_HINT_RANGE, "1,179,0.1",PROPERTY_USAGE_EDITOR) );
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else
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p_list->push_back( PropertyInfo( Variant::REAL, "fovy" , PROPERTY_HINT_RANGE, "1,179,0.1",PROPERTY_USAGE_EDITOR) );
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} break;
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case PROJECTION_ORTHOGONAL: {
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p_list->push_back( PropertyInfo( Variant::REAL, "size" , PROPERTY_HINT_RANGE, "1,16384,0.01",PROPERTY_USAGE_NOEDITOR ) );
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if (keep_aspect==KEEP_WIDTH)
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p_list->push_back( PropertyInfo( Variant::REAL, "sizex" , PROPERTY_HINT_RANGE, "0.1,16384,0.01",PROPERTY_USAGE_EDITOR) );
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else
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p_list->push_back( PropertyInfo( Variant::REAL, "sizey" , PROPERTY_HINT_RANGE, "0.1,16384,0.01",PROPERTY_USAGE_EDITOR) );
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} break;
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}
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p_list->push_back( PropertyInfo( Variant::REAL, "near" , PROPERTY_HINT_EXP_RANGE, "0.01,4096.0,0.01") );
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p_list->push_back( PropertyInfo( Variant::REAL, "far" , PROPERTY_HINT_EXP_RANGE, "0.01,4096.0,0.01") );
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p_list->push_back( PropertyInfo( Variant::INT, "keep_aspect",PROPERTY_HINT_ENUM,"Keep Width,Keep Height") );
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p_list->push_back( PropertyInfo( Variant::BOOL, "current" ) );
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p_list->push_back( PropertyInfo( Variant::INT, "cull_mask",PROPERTY_HINT_LAYERS_3D_RENDER ) );
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p_list->push_back( PropertyInfo( Variant::OBJECT, "environment",PROPERTY_HINT_RESOURCE_TYPE,"Environment" ) );
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p_list->push_back( PropertyInfo( Variant::REAL, "h_offset" ) );
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p_list->push_back( PropertyInfo( Variant::REAL, "v_offset" ) );
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}
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void Camera::_update_camera() {
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Transform tr = get_camera_transform();
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tr.origin+=tr.basis.get_axis(1)*v_offset;
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tr.origin+=tr.basis.get_axis(0)*h_offset;
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VisualServer::get_singleton()->camera_set_transform( camera, tr );
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// here goes listener stuff
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// if (viewport_ptr && is_inside_scene() && is_current())
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// get_viewport()->_camera_transform_changed_notify();
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if (is_inside_tree() && is_current()) {
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get_viewport()->_camera_transform_changed_notify();
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}
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if (is_current() && get_world().is_valid()) {
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get_world()->_update_camera(this);
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}
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}
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void Camera::_notification(int p_what) {
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switch(p_what) {
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case NOTIFICATION_ENTER_WORLD: {
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bool first_camera = get_viewport()->_camera_add(this);
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if (!get_tree()->is_node_being_edited(this) && (current || first_camera))
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make_current();
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} break;
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case NOTIFICATION_TRANSFORM_CHANGED: {
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_request_camera_update();
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} break;
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case NOTIFICATION_EXIT_WORLD: {
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if (!get_tree()->is_node_being_edited(this)) {
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if (is_current()) {
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clear_current();
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current=true; //keep it true
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} else {
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current=false;
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}
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}
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get_viewport()->_camera_remove(this);
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} break;
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case NOTIFICATION_BECAME_CURRENT: {
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if (get_world().is_valid()) {
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get_world()->_register_camera(this);
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}
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} break;
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case NOTIFICATION_LOST_CURRENT: {
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if (get_world().is_valid()) {
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get_world()->_remove_camera(this);
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}
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} break;
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}
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}
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Transform Camera::get_camera_transform() const {
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return get_global_transform().orthonormalized();
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}
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void Camera::set_perspective(float p_fovy_degrees, float p_z_near, float p_z_far) {
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if (!force_change && fov==p_fovy_degrees && p_z_near==near && p_z_far==far && mode==PROJECTION_PERSPECTIVE)
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return;
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fov=p_fovy_degrees;
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near=p_z_near;
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far=p_z_far;
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mode=PROJECTION_PERSPECTIVE;
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VisualServer::get_singleton()->camera_set_perspective(camera,fov,near,far);
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update_gizmo();
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force_change=false;
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}
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void Camera::set_orthogonal(float p_size, float p_z_near, float p_z_far) {
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if (!force_change && size==p_size && p_z_near==near && p_z_far==far && mode==PROJECTION_ORTHOGONAL)
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return;
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size = p_size;
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near=p_z_near;
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far=p_z_far;
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mode=PROJECTION_ORTHOGONAL;
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force_change=false;
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VisualServer::get_singleton()->camera_set_orthogonal(camera,size,near,far);
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update_gizmo();
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}
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RID Camera::get_camera() const {
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return camera;
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};
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void Camera::make_current() {
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current=true;
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if (!is_inside_tree())
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return;
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get_viewport()->_camera_set(this);
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//get_scene()->call_group(SceneMainLoop::GROUP_CALL_REALTIME,camera_group,"_camera_make_current",this);
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}
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void Camera::clear_current() {
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current=false;
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if (!is_inside_tree())
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return;
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if (get_viewport()->get_camera()==this) {
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get_viewport()->_camera_set(NULL);
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get_viewport()->_camera_make_next_current(this);
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}
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}
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bool Camera::is_current() const {
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if (is_inside_tree() && !get_tree()->is_node_being_edited(this)) {
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return get_viewport()->get_camera()==this;
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} else
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return current;
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return false;
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}
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bool Camera::_can_gizmo_scale() const {
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return false;
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}
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Vector3 Camera::project_ray_normal(const Point2& p_pos) const {
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Vector3 ray = project_local_ray_normal(p_pos);
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return get_camera_transform().basis.xform(ray).normalized();
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};
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Vector3 Camera::project_local_ray_normal(const Point2& p_pos) const {
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if (!is_inside_tree()) {
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ERR_EXPLAIN("Camera is not inside scene.");
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ERR_FAIL_COND_V(!is_inside_tree(),Vector3());
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}
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#if 0
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Size2 viewport_size = get_viewport()->get_visible_rect().size;
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Vector2 cpos = p_pos;
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#else
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Size2 viewport_size = get_viewport()->get_camera_rect_size();
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Vector2 cpos = get_viewport()->get_camera_coords(p_pos);
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#endif
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Vector3 ray;
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if (mode==PROJECTION_ORTHOGONAL) {
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ray=Vector3(0,0,-1);
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} else {
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CameraMatrix cm;
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cm.set_perspective(fov,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
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float screen_w,screen_h;
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cm.get_viewport_size(screen_w,screen_h);
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ray=Vector3( ((cpos.x/viewport_size.width)*2.0-1.0)*screen_w, ((1.0-(cpos.y/viewport_size.height))*2.0-1.0)*screen_h,-near).normalized();
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}
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return ray;
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};
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Vector3 Camera::project_ray_origin(const Point2& p_pos) const {
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if (!is_inside_tree()) {
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ERR_EXPLAIN("Camera is not inside scene.");
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ERR_FAIL_COND_V(!is_inside_tree(),Vector3());
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}
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#if 0
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Size2 viewport_size = get_viewport()->get_visible_rect().size;
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Vector2 cpos = p_pos;
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#else
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Size2 viewport_size = get_viewport()->get_camera_rect_size();
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Vector2 cpos = get_viewport()->get_camera_coords(p_pos);
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#endif
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ERR_FAIL_COND_V( viewport_size.y == 0, Vector3() );
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// float aspect = viewport_size.x / viewport_size.y;
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if (mode == PROJECTION_PERSPECTIVE) {
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return get_camera_transform().origin;
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} else {
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Vector2 pos = cpos / viewport_size;
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float vsize,hsize;
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if (keep_aspect==KEEP_WIDTH) {
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vsize = size/viewport_size.get_aspect();
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hsize = size;
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} else {
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hsize = size*viewport_size.get_aspect();
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vsize = size;
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}
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Vector3 ray;
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ray.x = pos.x * (hsize) - hsize/2;
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ray.y = (1.0 - pos.y) * (vsize) - vsize/2;
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ray.z = -near;
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ray = get_camera_transform().xform(ray);
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return ray;
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};
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};
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bool Camera::is_position_behind(const Vector3& p_pos) const {
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Transform t = get_global_transform();
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Vector3 eyedir = -get_global_transform().basis.get_axis(2).normalized();
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return eyedir.dot(p_pos) < (eyedir.dot(t.origin)+near);
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}
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Point2 Camera::unproject_position(const Vector3& p_pos) const {
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if (!is_inside_tree()) {
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ERR_EXPLAIN("Camera is not inside scene.");
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ERR_FAIL_COND_V(!is_inside_tree(),Vector2());
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}
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Size2 viewport_size = get_viewport()->get_visible_rect().size;
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CameraMatrix cm;
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if (mode==PROJECTION_ORTHOGONAL)
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cm.set_orthogonal(size,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
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else
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cm.set_perspective(fov,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
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Plane p(get_camera_transform().xform_inv(p_pos),1.0);
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p=cm.xform4(p);
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p.normal/=p.d;
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Point2 res;
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res.x = (p.normal.x * 0.5 + 0.5) * viewport_size.x;
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res.y = (-p.normal.y * 0.5 + 0.5) * viewport_size.y;
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return res;
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}
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Vector3 Camera::project_position(const Point2& p_point) const {
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if (!is_inside_tree()) {
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ERR_EXPLAIN("Camera is not inside scene.");
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ERR_FAIL_COND_V(!is_inside_tree(),Vector3());
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}
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Size2 viewport_size = get_viewport()->get_visible_rect().size;
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CameraMatrix cm;
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if (mode==PROJECTION_ORTHOGONAL)
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cm.set_orthogonal(size,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
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else
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cm.set_perspective(fov,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
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Size2 vp_size;
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cm.get_viewport_size(vp_size.x,vp_size.y);
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Vector2 point;
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point.x = (p_point.x/viewport_size.x) * 2.0 - 1.0;
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point.y = (1.0-(p_point.y/viewport_size.y)) * 2.0 - 1.0;
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point*=vp_size;
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Vector3 p(point.x,point.y,-near);
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return get_camera_transform().xform(p);
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}
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/*
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void Camera::_camera_make_current(Node *p_camera) {
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if (p_camera==this) {
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VisualServer::get_singleton()->viewport_attach_camera(viewport_id,camera);
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active=true;
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} else {
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if (active && p_camera==NULL) {
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//detech camera because no one else will claim it
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VisualServer::get_singleton()->viewport_attach_camera(viewport_id,RID());
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}
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active=false;
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}
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}
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*/
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void Camera::set_environment(const Ref<Environment>& p_environment) {
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environment=p_environment;
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if (environment.is_valid())
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VS::get_singleton()->camera_set_environment(camera,environment->get_rid());
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else
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VS::get_singleton()->camera_set_environment(camera,RID());
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}
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Ref<Environment> Camera::get_environment() const {
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return environment;
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}
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void Camera::set_keep_aspect_mode(KeepAspect p_aspect) {
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keep_aspect=p_aspect;
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VisualServer::get_singleton()->camera_set_use_vertical_aspect(camera,p_aspect==KEEP_WIDTH);
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_change_notify();
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}
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Camera::KeepAspect Camera::get_keep_aspect_mode() const{
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return keep_aspect;
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}
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void Camera::_bind_methods() {
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ClassDB::bind_method( _MD("project_ray_normal","screen_point"), &Camera::project_ray_normal);
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ClassDB::bind_method( _MD("project_local_ray_normal","screen_point"), &Camera::project_local_ray_normal);
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ClassDB::bind_method( _MD("project_ray_origin","screen_point"), &Camera::project_ray_origin);
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ClassDB::bind_method( _MD("unproject_position","world_point"), &Camera::unproject_position);
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ClassDB::bind_method( _MD("is_position_behind","world_point"), &Camera::is_position_behind);
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ClassDB::bind_method( _MD("project_position","screen_point"), &Camera::project_position);
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ClassDB::bind_method( _MD("set_perspective","fov","z_near","z_far"),&Camera::set_perspective );
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ClassDB::bind_method( _MD("set_orthogonal","size","z_near","z_far"),&Camera::set_orthogonal );
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ClassDB::bind_method( _MD("make_current"),&Camera::make_current );
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ClassDB::bind_method( _MD("clear_current"),&Camera::clear_current );
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ClassDB::bind_method( _MD("is_current"),&Camera::is_current );
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ClassDB::bind_method( _MD("get_camera_transform"),&Camera::get_camera_transform );
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ClassDB::bind_method( _MD("get_fov"),&Camera::get_fov );
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ClassDB::bind_method( _MD("get_size"),&Camera::get_size );
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ClassDB::bind_method( _MD("get_zfar"),&Camera::get_zfar );
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ClassDB::bind_method( _MD("get_znear"),&Camera::get_znear );
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ClassDB::bind_method( _MD("get_projection"),&Camera::get_projection );
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ClassDB::bind_method( _MD("set_h_offset","ofs"),&Camera::set_h_offset );
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ClassDB::bind_method( _MD("get_h_offset"),&Camera::get_h_offset );
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ClassDB::bind_method( _MD("set_v_offset","ofs"),&Camera::set_v_offset );
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ClassDB::bind_method( _MD("get_v_offset"),&Camera::get_v_offset );
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ClassDB::bind_method( _MD("set_cull_mask","mask"),&Camera::set_cull_mask );
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ClassDB::bind_method( _MD("get_cull_mask"),&Camera::get_cull_mask );
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ClassDB::bind_method( _MD("set_environment","env:Environment"),&Camera::set_environment );
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ClassDB::bind_method( _MD("get_environment:Environment"),&Camera::get_environment );
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ClassDB::bind_method( _MD("set_keep_aspect_mode","mode"),&Camera::set_keep_aspect_mode );
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ClassDB::bind_method( _MD("get_keep_aspect_mode"),&Camera::get_keep_aspect_mode );
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//ClassDB::bind_method( _MD("_camera_make_current"),&Camera::_camera_make_current );
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BIND_CONSTANT( PROJECTION_PERSPECTIVE );
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BIND_CONSTANT( PROJECTION_ORTHOGONAL );
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BIND_CONSTANT( KEEP_WIDTH );
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BIND_CONSTANT( KEEP_HEIGHT );
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}
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float Camera::get_fov() const {
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return fov;
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}
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float Camera::get_size() const {
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return size;
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}
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float Camera::get_znear() const {
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return near;
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}
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float Camera::get_zfar() const {
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return far;
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}
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Camera::Projection Camera::get_projection() const {
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return mode;
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}
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void Camera::set_cull_mask(uint32_t p_layers) {
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layers=p_layers;
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VisualServer::get_singleton()->camera_set_cull_mask(camera,layers);
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}
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uint32_t Camera::get_cull_mask() const{
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return layers;
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}
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Vector<Plane> Camera::get_frustum() const {
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ERR_FAIL_COND_V(!is_inside_world(),Vector<Plane>());
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Size2 viewport_size = get_viewport()->get_visible_rect().size;
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CameraMatrix cm;
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if (mode==PROJECTION_PERSPECTIVE)
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cm.set_perspective(fov,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
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else
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cm.set_orthogonal(size,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
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return cm.get_projection_planes(get_camera_transform());
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}
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void Camera::set_v_offset(float p_offset) {
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v_offset=p_offset;
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_update_camera();;
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}
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float Camera::get_v_offset() const {
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return v_offset;
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}
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void Camera::set_h_offset(float p_offset) {
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h_offset=p_offset;
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_update_camera();
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}
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float Camera::get_h_offset() const {
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return h_offset;
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}
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Camera::Camera() {
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camera = VisualServer::get_singleton()->camera_create();
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size=1;
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fov=0;
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near=0;
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far=0;
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current=false;
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force_change=false;
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mode=PROJECTION_PERSPECTIVE;
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set_perspective(60.0,0.1,100.0);
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keep_aspect=KEEP_HEIGHT;
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layers=0xfffff;
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v_offset=0;
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h_offset=0;
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VisualServer::get_singleton()->camera_set_cull_mask(camera,layers);
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//active=false;
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}
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Camera::~Camera() {
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VisualServer::get_singleton()->free(camera);
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}
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